[OSM-newbies] Getting from OSM to Garmin

[Paul]

Ian Wills wrote:
> Here is my problem: I have edited a map (Lord Howe Island to be precise
> permalink:
> http://www.openstreetmap.org/?lat=-31.5467&lon=159.0684&zoom=13&layers=B000FTF)
> and I now want to get the map onto my Garmin Oregon 300 but, try as I might,
> I can get it there but I can't see it.
> 
> This is what I did:
> 1.  Downloaded the map with JOSM.
> 2.  Saved as a *.osm file.
> 3  Converted this to an *.img file using mkgmap.
> 4. Loaded the map onto MapSource using MapSetToolKit.exe.
> 
> Having got to this point I can I can view it in MapSource and can upload it
> to my Oregon 300 and view it there provided it is the only map I have on the
> unit in gmapsupp.img.
> 
> Lord Howe Island is a stunning place but it is only small (10 km end to end)
> and I would like to have more of the world available. No matter what I do,
> although I can combine this map with others and upload them, and can view
> other maps, I cannot see this one.
> 
> I have tired combinig it with other maps using both MapSource and
> GMapTppl.exe with the same result. I have successfully tested this process
> with another island, not drawn by me which I can view when loaded with other
> maps so I know that it should work in principle.
> 
> I have spent many hours on this and would appreiate any words of wisdom.

What is your mkgmap command line? I found that unless you use the
--latin1 switch strange things can happen

mkgmap can also combine multiple .osm or .img files

Paul